Hypodermic syringe.



J. B. WOODRUFF. HYPODERMIG SYRINGE. APPLICATION FILED DBo.9,1so.

936,205. Patented 0ct.5,19o9

nvanl'or,

'unir sierras JAMES B. WGODRUFF, OF SPRINGFIELD, TENNESSEE.

HYPODERMIC SYRINGE.

To all whom it may concern:

Be it known that l, JAMES B. VOODRUFF, a citizen of the United States, residing at Springfield, in the county of Robertson and State of Tennessee, have invented new and useful Improvements in Hypodermic Syringes, of which the following is a specification.

My invention relates to improvements in hypodermic syringes. t

The primary object of the invention is the provision of a syringe of this character which shall be capable of instant and safe use, the invention comprehending a syringe which is provided with a receptacle or reservoir from which a determinate quantity of sterile water may be drawn into the barrel of the syringe when it is desired to prepare the syringe for use.

A further object of the invention is the provision of a hypodermic syringe which shall be simple, durable and eiiicient, and which may be manufactured and sold at a comparatively low cost.

With the above and other objects in view, the invention consists in the novel construction, combination and arrangement of parts hereinafter fully described and claimed, and illustrated in the accompanying drawing, wherein Figure 1 is a view on an enlarged scale of a hypodermic syringe constructed in accordance with my invention. Fig. 2 is a sectional view taken on a. plane extending centrally and longitudinally through the syringe. Fig. 3 is a top plan View of the syringe.

Referring to the drawing by reference numerals, 1 designates the receptacle, 2 the cylinder, 3 the needle, and 4 the piston of my improved hypodermic syringe. The receptacle 1 is preferably cylindrical and is constructed of glass. llChe lower end of the receptacle 1 is closed by an integrally formed bottom 5, and the upper end thereof is fully open. The cylinder 2 is constructed of glass and it is concentrically arranged within the receptacle 1, the upper edge of the cylinder terminating at a point below the upper edge of the receptacle. The upper end of the cylinder 2 is fully open, and the lower end `thereof is closed by the bottom wall 5 with which the cylinder is integrally formed. Communication between the cylinder 2 and the receptacle 1 is established through the medium of a pair of diametrically opposed openings 6 which are located in the cylinder Specification of Letters Patent.

Application led December 9, 1908.

Patented @et 5, 1909. Serial No. 466,658.

at a point adjacent its lower end. The bottom 5 of the receptacle 1 is provided with an opening 7 which registers with the bottom of the cylinder 2, and with which registers the passage 8 of the needle 3. The piston 4 is a solid cylindrical member constructed of glass, and is of such diameter that its outer curved surface will snugly engage the inner curved surface of the cylinder 2. The piston 4 projects above the upper end of the receptacle 1 and is provided at its upper end with an operating head 9.

A tube 10 of any suitable non-corrosive metal is rotatably mounted upon the cylinder 2, the diameter of the tube being such that its inner curved surface will snugly engage the outer curved surface of the cylinder. The lower end of the tube 10 engages the inner surface of the bottoni 5 of the receptacle 1, and it is provided at diametrically opposite points with a pair of openings 11. lVhen the openings 11 in the tube 10 register with the opening G in the vcylinder 2, communication is established between the cylinder and receptacle 1. As the tube 10 is rotatably mounted. upon the cylinder2 the openings 11 may be thrown out of registration with the openings 6, thus cutting off communication between the cylinder 2 and the receptacle 1. lt should thus be apparent that the tube 10 has the function of a valve. rEhe upper end of the tube 10 is provided with a neck extension 12 which snugly embraces that portion of the piston 4 located above the upper edge of the cylinder 2, said neck being provided with a milled bead 13 by means of which the tube may be rotated to open or close the openings 6 in the cylinder 2. rlhe neck 12 is greater in thickness than the body of the tube 10, forming a shoulder engaging the upper edge of the cylinder 2. At its upper end the tube 10 is provided with a circular head or member 14 which has such a diam-` eter that its periphery snugly engages the inner curved surface of the receptacle 1, said head or member closing the upper end of the receptacle. The head or member 14 is provided with an vopening 15 through which the receptacle 1 may be filled with sterile water. Formed about the opening 15 in the head 14 is an annular flange 16 having its inner surface threaned for the reception of the threaded stem 1T of a closure 1S. The closure 18 is carried by a chain 19, one end of which is secured to the neck 12 of the tube 10, the other end thereof being secured to an eye 20 having swiveled connection with the closure. The tube 10 is provided at diametrically opposite points with a pair of sight openings 21 through which the cylinder 2 may be observed.

rlhe syringe is carried in a metal casing 22 which is snugly fitted to the receptacle 1. The lower end of the casing 22 is closed by an integrally formed bottom 23 which is greater in thickness than the curved side of the casing and which is pi'ovided with an opening 24 registering with the opening 7 in the bottom 5 of the receptacle l. The wall of the opening 24 is screw threaded for the reception of the threaded stein 25 of the needle 3. At a point adjacent. the stem 25 the needle 3 is provided with an annular flange 26 between which and the bottom 23 of the casing 22 is mounted a washer 27, said washer being carried by and removable with the needle. The casing 22 is provided with elongated sight openings 28 through which the receptacle l and cylinder 2 may be observed.

The tube 10 and casing 22 are secured in `applied position through the medium of a cap 29 which has threaded engagement with the upper edge of the casino'. A washei 29a effects a liquid-tight connection between the member 14 and the receptacle l. The cap 29 is provided with a circular opening 30` through which the neck 12 of the tube 10 projects, and it is provided with a pair of diametrically opposed projections 31 which provide means by which the syringe may be held during use.

In practice, the several parts of the syringe, except the needle, are assembled and a closure 32 has threaded engagement with the wall of the opening 24 in the bottom 23 of the casing 22, said closiiie being carried by a chain 33 which is secured at one end to the casing and at its opposite end to an eye 34 having a swiveled connection with the closure. After the receptacle l is filled with sterile water, the syringe is placed in a suitable case, the tube 10 being in position to close the opening 6 in the cylinder 2. IVhen it is desired to use the syringe, the tube 10 is turned to register the openings 1l therein with the openings 6 in the cylinder 2, and the piston 4 is withdrawn, the withdrawal of the piston allowing the sterile water to flow from the receptacle l into the cylinder 2. The amount of water entering the cylinder 2 can be determined from a scale appearing on diametrically opposite sides of the piston 4. After the desired amount of water has entered the cylinder 2, the tube 10 is turned to close the openings G in the cylinder, the closure 32 is removedr andl a tablet is inserted into the cylinder through the openings 24 and 7. If found desirable one of the fingers may be placed over the openings and the syringe shaken to facilitate the solution of the tablet. solved, the needle 3 is applied, whereupon the syringe is ready for use. After the syringe has been used the needle 3 is removed and the closure 32 is applied after which the syringe is again inserted in its case.

As the casing 22 and the tube lO are provided with registering openings, the interior of the cylinder may be viewed. The casing 22 protects theglass receptacle 1 from injury, and the cap 29 performs a two-fold function, namely, that of securing the casing and tube in applied position, and that of providing means by which the syringe may be held during its use. The several parts of the syringe may be readily disassociated thereby permitting the syringe to be easily and quickly cleaned.

A syringe constructed in accordance with my invention renders it possible for a physician to administer a hypodermic injection at any time and at any placeas he has at hand a quantity of sterile water. The syringe is admirably adapted for the use of army and ambulance surgeons.

Vilhile I have described the method of operation Of the invention, together with the apparatus which I now consider to be the best embodiment thereof, I desire to have it understood that the apparatus shown is merely illustrative and that such changes may be made when desired as are within the scope of the appended claims.

Having thus described the invention, what is claimed as new is l. A hypodermic syringe comprising a water receptacle, said receptacle being closed at its lower end and open at its upperend, the closed end of the receptacle being provided with an opening, a cylinder secured to the closed end of the water receptacle about the opening therein, said cylinder being proF vided with an opening at its lower end, a piston mounted in the cylinder, and a needle secured to the water ieceptacle and coniinunicating with the cylinder through the opening in the bottom of the receptacle, a tube mounted upon the cylinder and provided with openiiigs at its lower end, said tube being provided with a member closing the upper end of the water receptacle.

2. A hypodermic syringe comprising a water receptacle, a cylinder arranged within and communicating' with the water receptaele, a piston in the cylinder, a need-le communicating with the cylinder, a casinginclosing the receptacle, said casing being provided with diainetrically opposed openings, and means securing the casing to, the receptacle.

After the tablet has been dis 3. A hypodermic syringe comprising aL piston mounted in the cylinder and provided with an operating head, a tube mounted on the cylinder and provided with openings at its lower end and with diametrically opposed sight openings, said tube being provided with an extension closing the open end of the receptacle, a easing inclosing the receptacle, a needle detachably secured to the casing and communicating with the cylinder, a closure carried by the casing, another closure carried by the tube, and means securing the tube and casing in applied position.

et. A hypodermic syringe comprising a water receptacle, a cylinder arranged within the receptacle and provided with openings, a piston in the cylinder, a needle communicating with the cylinder, and a tube rotatably mounted upon the cylinder and provided with openings adapted to register with openings in the cylinder, said tube being provided with a head which closes one end of the receptacle.

5. A hypodermio syringe comprising a water receptacle, a cylinder arranged within the receptacle and provided with openings, a piston mounted in the cylinder, a needle communicating with the cylinder, and a tube rotatably mounted upon the cylinder and provided with openings adapted to be registered with the openings in the cylinder, said tube being provided with a head which closes one end of the receptacle, one end of the tube projecting beyond said head to provide means by which the tube may be rotated on the cylinder.

6. A hypodermic syringe comprising a water receptacle, a cylinder arranged within the receptacle and provided with openings, a piston mounted in the cylinder, a needle communicating with the cylinder, a tube rotatably mounted upon the cylinder and provided with openings adapted to be registered with the openings in the cylinder, and a casing inclosing the receptacle, said tube and casing being provided with sight openings.

7 A hypodermic syringe comprising a Water receptacle, a cylinder arranged within the receptacle and provided with openings, a piston mounted in the cylinder, a needle communicating with the cylinder, a tube r0- tatably mounted upon the cylinder and provided with openings adapted to be registered with the openings in the cylinder, a casing inclosing the receptacle, said tube and casing being provided with sight openings, and means securing the tube and casing in applied position.

8. A hypodermic syringe comprising a transparent Water receptacle, a transparent cylinder arranged in the receptacle and provided with openings, a piston mounted in the cylinder, a needle communicating with the cylinder, and an opaque tube rotatably mounted upon the cylinder and provided with openings adapted to be registered with openings in the cylinder, said tube being provided with sight openings.

9. A hypodermic syringe comprising a water receptacle, a cylinder arranged Within and communicating with the water receptacle, a piston mounted in the cylinder, a casing inclosing the receptacle, and a needle carried by the casing and communicating with the cylinder.

10. A hypodermic syringe comprising a water receptacle, a cylinder arranged within and communicating with the water receptacle, a piston mounted in the cylinder, a needle communicating with the cylinder, a casing inclosing the receptacle and provided with sight openings, and means securing the casing in position on the receptacle, said means being provided with projections by means of which the syringe may be held during use.

In testimony whereof I affix my signature in presence of two witnesses.

JAMES B. WTOODRUFF. 

